It is known to contain coins, glass, and the tools for making these, going back thousands of years.

Relaxation drinks have been known to contain other natural ingredients.

These are known to contain large amounts, or a majority, of ice.

It is one of the provinces known to contain petroleum and natural gas.

The formation has long been known to contain natural gas.

It was known to contain large quantities of natural gas prior to 2008.

FL is known to contain several natural problems, including arithmetic on numbers.

Bodies are not known to contain, within themselves, forces that cause motion.

However, these memoirs are known to contain many errors of fact, especially about his earlier years.

Some of the vegetation on the sun is known to contain healing properties.